<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>User</title>
</head>
<body>
<form action="localhost://8080/user" method="post">
    code:<input type="text" name="code"><br>
    username:<input type="text" name="username"><br>
    <input type="submit" value="提交"><br>
</form>

</body>
</html>